!! used as default html header if there is none in the selected theme.

   Q-Puzzle

This is a mathematical jigsaw puzzle! You have a photo cut into q×q pieces, where q is a power of a prime p. Therefore it represents the vector plane over the finite field Fq with q elements.

These q×q pieces will be presented to you in disorder, result of a (hidden) affine transformation of the plane. And your goal is to recover the image by finding the inverse affine transformation. You have the right to multiple tries in order to do it.

Recall that an affine transformation is a linear transformation followed by a translation. All are operations over Fq.

You may play this game even without understanding the mathematics behind. In this case don't go further than q=5; the game risks to be very frustrating. We also recommend another online jigsaw Shifting puzzle which requires much less mathematical background.

Choose: q = (Bigger q usually means more difficult puzzle.)
Photo =     The most recent version
This page is not in its usual appearance because WIMS is unable to recognize your web browser.
In order to access WIMS services, you need a browser supporting forms. In order to test the browser you are using, please type the word wims here: and press ``Enter''.

Please take note that WIMS pages are interactively generated; they are not ordinary HTML files. They must be used interactively ONLINE. It is useless for you to gather them through a robot program.